Improvement in lamps



nurus s.MEnn|LL @Lf LAMP Bumm wLLLmm cameron PATENTE@ --JANQSISGS @uitengisten' daieat @mit 'RUFUS SPAULDING MERRILL AND WILLIAM GARLETON, OFBOSTON, MAS- SAOHUSETTS.

IMPROVEMENT IN LAMPS.

@its Salaris mettait in ilgrt-t ttttut ntnrt mit uniting gaat nf tigesum-r.

TO WHOM. ITMAY CONCERN:

Be it known that we, Rurus S. MEnnrLL'and WILLIAM GAnLnfroNfof Boston,in the county of Suffolk, and State of Massachusetts; have -inventedcertain new and useful-Improvements in Lamp-Burners; and we herebydeclare the following to be a full, clear, and exact description of thesame, reference being had to the accompanying drawings, in Whichi Figure1 is a vertical central sectionA of a burner constructed in accordancewith our invention.

Figure 2 is alike section of the same on the line x "j, iig. 1.

Figure 3 is an elevation of-the removable cone .and ehimneylholder,detached from the other portion of the burner. i

This invention relates to that class of burners having the cone andchimney-holdermounted upon a sleeve, which lits or slides upon thewick-tube, the object of such construction being not only to isolate thebase ofthe burner `from those parts which are contiguous to or in theimmediate neighborhood of the dame, but also to admit of the latterparts being readilyremoved from thewick-tube, so as to uncover the wickWhenever it is required to trim or to light the same. In applicationsnow pending before the United States Patent Oiiice,'in the names of R.S. MERRILL, and R. S. MERRILL and WILLIAM CAnLnroN, the advantages ofsuch construction are fully pointed out and explained, and need not behere repeat-ed In the accompanying drawings, the base, A, of the burner,which tits over the orifice in the top ofthe fluidreceptacle orreservoir of the hydrocarbon-Huid lamp,- carries, as usual, thewick-tube B and rack C, for clevating or loweringthe wiclL The base iscovered by a cap, D, ivhich shuts in and encloses the rack C, andorifices in the wick-tube and hase, so as to exclude all danger ofexplosion which would arise if the vapor of the volatile Huid whichexudes from the oriticesin the Wick-tube, and gathers in the base, werefree to communicate with the dame. The wick-tube B extends some distanceabove the cap, and has fitted upon it a. sleeve, a, to which arevattached, by suitable means, (in this instance by means of the gauze orperforated plate 5,) the chimney-rest and holder c, and the cone ordedector CZ.. The sleeve is capable of sliding up and down upon thetube, so that it, together with the chimney-holder and cone which itcarries, can be removed from or fitted upon the said tube with perfectfacility. A

When the wick 'is lighted, in order to replace the sleeve and thepartsit carries (which have been previously removed in order to light thewick.) upon the wick-tube, without danger of extinguishing theA iame,openings or perforations e are formed in the sides of the sleeve,through which, while the sleeve is being slipped down over thewick-tube, the ame receives a suiiicient supply of air to keep it aliveuntil the sleeve has reached its proper position and ceases to encirclethe dame.

The combination of the sleeve and upper part of the burner' with thebase 4and wick-tube, as well as the peculiar construction of the sleeveitself, are the subjects of applications, which, as above mentioned, arenow pending in the United States Patent OHice. The improvement Which itis nonY desired to secure by Letters Patent has reference to theconstruction of what may be termed the upper or removable section oftheburner, consisting of the sleeve end parts which it carries, thevobject-being to better adapt such section for common vand every-day use.

In this portion of the burner, as ueretofore made', the metal diaphragmor gauze, which closes the bottom of the cone and chimney-rest, has beengiven a concavo-convex form, the convexity being upon the exteriorsurface of. the plate or gauze; and not'only this, but the lower end ofthe sleeve has extended down some distance below the base of thechimney-rest, so thatwhen the section is removed from the tube, andplaced upon the table or other place where the lamp happens to be, itcannot be set down in an upright position without great danger offalling over, and thus breaking the chimney, which is held in t'hechimney-rest; for, resting, as it does, upon the narrow and contractedbase formed by the bottom Aof the sleeve, any slight `jar will sufficeto destroy its equilibrium, while, if the base of the sleeve is madeiush with the gauze or diaphragm, the rounded surface of the latterforbids the possibility of the section occupying an upright position,but it must be placed upon its side, in which position it `isvery-liableto roll from the table or other place where it lies.

The object of the-,present invention is to so construct'the section asto give it a broad base, upon which it may standsecurely when detachedor removed from the burner. '.lo this end, as shown in the drawings, thegauze or perforated plate b, which extends over the bottoni of thesection, is made concave on its under side, B0 that the point of it@greatest depression shall be where'vit joins with theannularehimney-holder e; or, if preferred, the diaphragm may have aplane surface, ilush with the bottom oi: the elimney-holder.` In eithercase, however, the lower end of the 'sleeve a should not extend belowthe bottom ot the'ehimney-holder, but ought, as shown in the drawing, tostop a little short of thelplane in which the base of the said annularholder lies. When s. section thus constructed is removed from theburner, and set down upon a table or other suitable place, it will beseen that, as represented in fig. 3, the section will stand upon thebroad base formed by the annular chimney-holder, and will thusbe-maintained steadily in an upright position. The position upon thewicktube of the sleeve a, and parts b c d which it carries, is shown infigs, 1 and 2. *'lhe metal diaphragm,'or perforated plate b, is'soldered or otherwise suitably Secured both to the sleeve a and to thechimney-holder c, and

serves to maintain the sleeve and the cone and chimney-holder in theirproper relations to each other. The lower end of the sleeve rests *snthe cap D, which is of suteient height 'to hold the sleeve and partswhich it i carries at the proper distance above the base of the burner,so as to remove the latter from,the immediate neiahborhood of theehimney-holder'and other parts liable to become highly heated by theHome.

Having now described our invention, and the manner invwhich the same isor maybe carried into effect, we will state our claim, as follows:

In a lemp-burner in which theeoneand chimney-holder are connected with asleeve fitting thewick-tube, We claim the arrangement of the parts,substantially in the manner herein described, so that .the removable Aparts'otl the burner, when taken from the wick-tube, may be deposited inan upright position, and supported upon n broad base, as and for thepurposes set forth.

In testimony whereof, we have signed our names to this specificationbefore two subscribing witnesses.

RUFUS SPAULDING MERRILL, -WILLIAM CARLETON.

Witnesses:

Cms. B. F. ADAMS, F.'W. GHoATn.

